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From: Nilesh Javali <njavali@marvell.com>
To: <martin.petersen@oracle.com>
Cc: <linux-scsi@vger.kernel.org>, <GR-QLogic-Storage-Upstream@marvell.com>
Subject: [PATCH v2 05/17] qla2xxx: Fix premature hw access after pci error
Date: Sun, 9 Jan 2022 21:02:06 -0800	[thread overview]
Message-ID: <20220110050218.3958-6-njavali@marvell.com> (raw)
In-Reply-To: <20220110050218.3958-1-njavali@marvell.com>

From: Quinn Tran <qutran@marvell.com>

Fix premature hw access after pci error.
After a recoverable PCI error has been detected and recovered, qla driver
needs to check to see if the error condition still persist and/or wait until
the OS to give the resume signal.

Sep  8 22:26:03 localhost kernel: WARNING: CPU: 9 PID: 124606 at qla_tmpl.c:440
qla27xx_fwdt_entry_t266+0x55/0x60 [qla2xxx]
Sep  8 22:26:03 localhost kernel: RIP: 0010:qla27xx_fwdt_entry_t266+0x55/0x60
[qla2xxx]
Sep  8 22:26:03 localhost kernel: Call Trace:
Sep  8 22:26:03 localhost kernel: ? qla27xx_walk_template+0xb1/0x1b0 [qla2xxx]
Sep  8 22:26:03 localhost kernel: ? qla27xx_execute_fwdt_template+0x12a/0x160
[qla2xxx]
Sep  8 22:26:03 localhost kernel: ? qla27xx_fwdump+0xa0/0x1c0 [qla2xxx]
Sep  8 22:26:03 localhost kernel: ? qla2xxx_pci_mmio_enabled+0xfb/0x120
[qla2xxx]
Sep  8 22:26:03 localhost kernel: ? report_mmio_enabled+0x44/0x80
Sep  8 22:26:03 localhost kernel: ? report_slot_reset+0x80/0x80
Sep  8 22:26:03 localhost kernel: ? pci_walk_bus+0x70/0x90
Sep  8 22:26:03 localhost kernel: ? aer_dev_correctable_show+0xc0/0xc0
Sep  8 22:26:03 localhost kernel: ? pcie_do_recovery+0x1bb/0x240
Sep  8 22:26:03 localhost kernel: ? aer_recover_work_func+0xaa/0xd0
Sep  8 22:26:03 localhost kernel: ? process_one_work+0x1a7/0x360
..
Sep  8 22:26:03 localhost kernel: qla2xxx [0000:42:00.2]-8041:22: detected PCI
disconnect.
Sep  8 22:26:03 localhost kernel: qla2xxx [0000:42:00.2]-107ff:22:
qla27xx_fwdt_entry_t262: dump ram MB failed. Area 5h start 198013h end 198013h
Sep  8 22:26:03 localhost kernel: qla2xxx [0000:42:00.2]-107ff:22: Unable to
capture FW dump
Sep  8 22:26:03 localhost kernel: qla2xxx [0000:42:00.2]-1015:22: cmd=0x0,
waited 5221 msecs
Sep  8 22:26:03 localhost kernel: qla2xxx [0000:42:00.2]-680d:22: mmio
enabled returning.
Sep  8 22:26:03 localhost kernel: qla2xxx [0000:42:00.2]-d04c:22: MBX
Command timeout for cmd 0, iocontrol=ffffffff jiffies=10140f2e5
mb[0-3]=[0xffff 0xffff 0xffff 0xffff]

Cc: stable@vger.kernel.org
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
---
 drivers/scsi/qla2xxx/qla_os.c   | 10 +++++++++-
 drivers/scsi/qla2xxx/qla_tmpl.c |  9 +++++++--
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 0a7b00d165c7..c4b4b4496399 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -7639,7 +7639,7 @@ qla2xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
 
 	switch (state) {
 	case pci_channel_io_normal:
-		ha->flags.eeh_busy = 0;
+		qla_pci_set_eeh_busy(vha);
 		if (ql2xmqsupport || ql2xnvmeenable) {
 			set_bit(QPAIR_ONLINE_CHECK_NEEDED, &vha->dpc_flags);
 			qla2xxx_wake_dpc(vha);
@@ -7680,9 +7680,16 @@ qla2xxx_pci_mmio_enabled(struct pci_dev *pdev)
 	       "mmio enabled\n");
 
 	ha->pci_error_state = QLA_PCI_MMIO_ENABLED;
+
 	if (IS_QLA82XX(ha))
 		return PCI_ERS_RESULT_RECOVERED;
 
+	if (qla2x00_isp_reg_stat(ha)) {
+		ql_log(ql_log_info, base_vha, 0x803f,
+		    "During mmio enabled, PCI/Register disconnect still detected.\n");
+		goto out;
+	}
+
 	spin_lock_irqsave(&ha->hardware_lock, flags);
 	if (IS_QLA2100(ha) || IS_QLA2200(ha)){
 		stat = rd_reg_word(&reg->hccr);
@@ -7704,6 +7711,7 @@ qla2xxx_pci_mmio_enabled(struct pci_dev *pdev)
 		    "RISC paused -- mmio_enabled, Dumping firmware.\n");
 		qla2xxx_dump_fw(base_vha);
 	}
+out:
 	/* set PCI_ERS_RESULT_NEED_RESET to trigger call to qla2xxx_pci_slot_reset */
 	ql_dbg(ql_dbg_aer, base_vha, 0x600d,
 	       "mmio enabled returning.\n");
diff --git a/drivers/scsi/qla2xxx/qla_tmpl.c b/drivers/scsi/qla2xxx/qla_tmpl.c
index 26c13a953b97..b0a74b036cf4 100644
--- a/drivers/scsi/qla2xxx/qla_tmpl.c
+++ b/drivers/scsi/qla2xxx/qla_tmpl.c
@@ -435,8 +435,13 @@ qla27xx_fwdt_entry_t266(struct scsi_qla_host *vha,
 {
 	ql_dbg(ql_dbg_misc, vha, 0xd20a,
 	    "%s: reset risc [%lx]\n", __func__, *len);
-	if (buf)
-		WARN_ON_ONCE(qla24xx_soft_reset(vha->hw) != QLA_SUCCESS);
+	if (buf) {
+		if (qla24xx_soft_reset(vha->hw) != QLA_SUCCESS) {
+			ql_dbg(ql_dbg_async, vha, 0x5001,
+			    "%s: unable to soft reset\n", __func__);
+			return INVALID_ENTRY;
+		}
+	}
 
 	return qla27xx_next_entry(ent);
 }
-- 
2.23.1


  parent reply	other threads:[~2022-01-10  5:03 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-10  5:02 [PATCH v2 00/17] qla2xxx misc bug fixes and features Nilesh Javali
2022-01-10  5:02 ` [PATCH v2 01/17] qla2xxx: Refactor asynchronous command initialization Nilesh Javali
2022-01-10  5:02 ` [PATCH v2 02/17] qla2xxx: Implement ref count for srb Nilesh Javali
2022-02-03 14:44   ` Ewan Milne
2022-02-04  7:16     ` Saurav Kashyap
2022-02-08 10:59       ` Saurav Kashyap
2022-02-09 20:09         ` Ewan Milne
2022-01-10  5:02 ` [PATCH v2 03/17] qla2xxx: fix stuck session in gpdb Nilesh Javali
2022-01-10  5:02 ` [PATCH v2 04/17] qla2xxx: Fix warning message due to adisc is being flush Nilesh Javali
2022-01-10  5:02 ` Nilesh Javali [this message]
2022-01-10  5:02 ` [PATCH v2 06/17] qla2xxx: Fix scheduling while atomic Nilesh Javali
2022-01-10  5:02 ` [PATCH v2 07/17] qla2xxx: add retry for exec fw Nilesh Javali
2022-01-10  5:02 ` [PATCH v2 08/17] qla2xxx: Show wrong FDMI data for 64G adaptor Nilesh Javali
2022-01-10  5:02 ` [PATCH v2 09/17] qla2xxx: Add ql2xnvme_queues module param to configure number of NVME queues Nilesh Javali
2022-01-10  5:02 ` [PATCH v2 10/17] qla2xxx: Fix device reconnect in loop topology Nilesh Javali
2022-01-10  5:02 ` [PATCH v2 11/17] qla2xxx: fix warning for missing error code Nilesh Javali
2022-01-10  5:02 ` [PATCH v2 12/17] qla2xxx: edif: Fix clang warning Nilesh Javali
2022-01-10  5:02 ` [PATCH v2 13/17] qla2xxx: Fix T10 PI tag escape and IP guard options for 28XX adapters Nilesh Javali
2022-01-10  5:02 ` [PATCH v2 14/17] qla2xxx: Suppress a kernel complaint in qla_create_qpair() Nilesh Javali
2022-01-10  5:02 ` [PATCH v2 15/17] qla2xxx: Add devid's and conditionals for 28xx Nilesh Javali
2022-01-10  5:02 ` [PATCH v2 16/17] qla2xxx: check for firmware dump already collected Nilesh Javali
2022-01-10  5:02 ` [PATCH v2 17/17] qla2xxx: Update version to 10.02.07.300-k Nilesh Javali
2022-01-25  5:00 ` [PATCH v2 00/17] qla2xxx misc bug fixes and features Martin K. Petersen
2022-02-01  2:04 ` Martin K. Petersen

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